Tube of uranium ore.
An example of the element Uranium

Tube of uranium ore.
This ore is from an old "ATOMIC ENERGY" chemistry set sold by Chemcraft in the 1950's. Radioactivity was popular back then.

I got the chemistry set on eBay after consulting this trusty reference book about radioactive collectables. According to its table of going rates for these things, I got a good deal on the chemistry set, though it is not in perfect condition and is missing some components. Modern chemistry sets are pretty wimpy, but I have to say that, aside from the uranium ore and the radium, this set is pretty tame as well. It even proudly claims to contain "no dangerous or explosive chemicals". I mean really, where's the fun in that? Here's a picture of the set: